Coagulation-membrane filtration of Chlorella vulgaris

Duu-Jong Lee; Guan-Yu Liao; Yin-Ru Chang; Jo-Shu Chang

doi:10.1016/j.biortech.2011.12.098

Coagulation-membrane filtration of Chlorella vulgaris

Duu-Jong Lee, Guan-Yu Liao, Yin-Ru Chang, Jo-Shu Chang

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

43 Citations (Scopus)

Abstract

Filtration-based separation of Chlorella vulgaris, a species with excellent potential for CO ₂ capture and lipid production, was investigated using a surface-modified hydrophilic polytetrafluoroethylene (PTFE) membrane. Coagulation using polyaluminum chloride (PACl) attained maximum turbidity removal at 200mgL ^-1 as Al ₂O ₃. The membrane filtration flux at 1bar increased as the PACl dose increased, regardless of overdosing in the coagulation stage. The filtered cake at the end of filtration tests peaked in solid content at 10mgL ^-1 as Al ₂O ₃, reaching 34% w/w, roughly two times that of the original suspension. Differential scanning calorimetry (DSC) tests demonstrate that the cake with minimum water-solid binding strength produced the driest filter cake. Coagulation using 10mgL ^-1 PACl as Al ₂O ₃, followed by PTFE membrane filtration at 1bar, is an effective process for harvesting C. vulgaris from algal froth. © 2011 Elsevier Ltd.

Original language	English
Pages (from-to)	184-189
Journal	Bioresource Technology
Volume	108
DOIs	https://doi.org/10.1016/j.biortech.2011.12.098
Publication status	Published - Mar 2012
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 13 Climate Action

Research Keywords

Harvesting
Microalgae
Polyaluminum chloride
Polytetrafluoroethylene membrane

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10.1016/j.biortech.2011.12.098

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abstract = "Filtration-based separation of Chlorella vulgaris, a species with excellent potential for CO 2 capture and lipid production, was investigated using a surface-modified hydrophilic polytetrafluoroethylene (PTFE) membrane. Coagulation using polyaluminum chloride (PACl) attained maximum turbidity removal at 200mgL -1 as Al 2O 3. The membrane filtration flux at 1bar increased as the PACl dose increased, regardless of overdosing in the coagulation stage. The filtered cake at the end of filtration tests peaked in solid content at 10mgL -1 as Al 2O 3, reaching 34% w/w, roughly two times that of the original suspension. Differential scanning calorimetry (DSC) tests demonstrate that the cake with minimum water-solid binding strength produced the driest filter cake. Coagulation using 10mgL -1 PACl as Al 2O 3, followed by PTFE membrane filtration at 1bar, is an effective process for harvesting C. vulgaris from algal froth. {\textcopyright} 2011 Elsevier Ltd.",

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AU - Lee, Duu-Jong

AU - Liao, Guan-Yu

AU - Chang, Yin-Ru

AU - Chang, Jo-Shu

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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N2 - Filtration-based separation of Chlorella vulgaris, a species with excellent potential for CO 2 capture and lipid production, was investigated using a surface-modified hydrophilic polytetrafluoroethylene (PTFE) membrane. Coagulation using polyaluminum chloride (PACl) attained maximum turbidity removal at 200mgL -1 as Al 2O 3. The membrane filtration flux at 1bar increased as the PACl dose increased, regardless of overdosing in the coagulation stage. The filtered cake at the end of filtration tests peaked in solid content at 10mgL -1 as Al 2O 3, reaching 34% w/w, roughly two times that of the original suspension. Differential scanning calorimetry (DSC) tests demonstrate that the cake with minimum water-solid binding strength produced the driest filter cake. Coagulation using 10mgL -1 PACl as Al 2O 3, followed by PTFE membrane filtration at 1bar, is an effective process for harvesting C. vulgaris from algal froth. © 2011 Elsevier Ltd.

AB - Filtration-based separation of Chlorella vulgaris, a species with excellent potential for CO 2 capture and lipid production, was investigated using a surface-modified hydrophilic polytetrafluoroethylene (PTFE) membrane. Coagulation using polyaluminum chloride (PACl) attained maximum turbidity removal at 200mgL -1 as Al 2O 3. The membrane filtration flux at 1bar increased as the PACl dose increased, regardless of overdosing in the coagulation stage. The filtered cake at the end of filtration tests peaked in solid content at 10mgL -1 as Al 2O 3, reaching 34% w/w, roughly two times that of the original suspension. Differential scanning calorimetry (DSC) tests demonstrate that the cake with minimum water-solid binding strength produced the driest filter cake. Coagulation using 10mgL -1 PACl as Al 2O 3, followed by PTFE membrane filtration at 1bar, is an effective process for harvesting C. vulgaris from algal froth. © 2011 Elsevier Ltd.

KW - Harvesting

KW - Microalgae

KW - Polyaluminum chloride

KW - Polytetrafluoroethylene membrane

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DO - 10.1016/j.biortech.2011.12.098

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SN - 0960-8524

VL - 108

SP - 184

EP - 189

JO - Bioresource Technology

JF - Bioresource Technology

ER -

Coagulation-membrane filtration of Chlorella vulgaris

Abstract

Bibliographical note

UN SDGs

Research Keywords

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